package com.syz.mall.interceptor;


import com.syz.mall.pojo.User;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
        User user = (User) session.getAttribute("user");
        if (user == null) {
            String url = String.valueOf(request.getRequestURL());
            session.setAttribute("url", url);
            response.sendRedirect(request.getContextPath()+ "/user/getLoginPage");
            return false;
        }else {
            session.removeAttribute("url");
        }
        return true;
    }
}
